Jun 08 2018 · Hydraulic pressure test is 1.25 times working pressure ( 10 minutes maintain ) 1.Close all openings. 2.Open air vent cock. 3.Fill up boiler water fully 4.Close the air vent cock 5.Place hydraulic jack to feed water line. 6.Fit standard pressure
Starting Boiler and Pressure Rise. The following work procedures must be followed during start-up of the boiler. Check that the gauge board valve and pressure gauge valves are opened. Check that the air valve is open if the is below 1.0 bar. Start the on manual control and on low load.
Jan 21 2021 · Ship Boiler working principle and types: According to the Ship boiler working principle there are two types of boilers. One is the water tube boiler and the other is the fire tube boiler. The water tube will use for high high temperature high capacity steam using applications. An example is the propulsion of the .
Air at a pressure of 20 to 30 bar is required for starting main and auxiliary diesel engines in motorships and for the auxiliary diesels of steamships. Control air at a lower pressure is required for ships of both categories and whether derived from high pressure compressors through reducing valves or from special control air compressors it must be clean dry and oil free.....
Mar 01 2018 · 5) Low steam Pressure: this Alarm occurs to show various cases such as burner is not firing up-to the mark feed water is less in the boiler therefore less pressure. 6) High steam pressure : Alarm with Trip to burner occurs to prevent the damage to the steam drum due to excessive
Jun 08 2018 · Hydraulic pressure test is 1.25 times working pressure ( 10 minutes maintain ) 1.Close all openings. 2.Open air vent cock. 3.Fill up boiler water fully 4.Close the air vent cock 5.Place hydraulic jack to feed water line. 6.Fit standard pressure gauge. 7.Applied hydraulic pressure 1.25 times of working pressure and maintain 10minutes.
Dec 29 2020 · The pressure gauges are also incorporated with cut-in and cut-out automation systems i.e. the input from the pressure gauges are used to operate the boiler burner. When the pressure reaches the set value the will stop firing and when the drops to a lower set value the will be switched ON to raise the ...